Derating

Decision Type: Prevention

Method Category: Design-in reliability, Risk reduction

Categories: Methods

Designing the use of or selecting an item in such a way that applied stresses are below rated values. Derating supplies a means to create a system that is robust over a range of applied stress values. Thus minimizing failures.

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Imagine you are requested to assist a design team in determining how to best improve the reliability of a product. You learn that the organization produces a range of point of sale (POS) devices and they have invited you to a meeting with their staff to discuss the product and ways to improve the field reliability. To help understand the situation, you may have already started to think of a set of questions whose answers would lead to suitable recommendations:
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